S28SCURRENT SENSORS

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Servo system / Current-output type

S28S500D24Z Series【STANDARDS】
・UL508
・EN 62477-1

Introduction

RoHS

Unit

Value

Remarks

Maximum Supply voltage

Vcc

V± 25.2

Ta= － 40℃～ +70℃

Primary conductor temperture

―℃

100

Ta= － 40℃～ +70℃

Symbol

Unit

Value

RemarksVd－

AC4.0kV，for 1minute(Sensing current 0.5mA)

Primary ⇔ Secondary

ISOLATION CHARACTERISTICS
Parameters
lnsulation voltage
Impulse withstand voltage

Insulation resistance

Clearance distance

VwkV

6.0EN62477-1;2012
Input waveform：・Front time 1.2µs
・Time to half value 50µs
・singleRISMΩ≧ 500M Ω（at DC500V）

Primary ⇔ SecondarydCI

Creepage distance

dCpmm

mm

S28S500D15ZJ
S28S500D15ZM

min : 12.0
(min : 6.5)

S28S500D15Z

min : 8.5
(min : 6.5)

Primary ⇔ Secondary
Busbar ⇔ ConnectorPWB

S28S500D15ZJ
S28S500D15ZM

min : 12.0
(min : 8.2)

(Busbar ⇔ Connector/PWB @ Temporary,no filler.)

S28S500D15Z

min : 8.5
(min : 8.2)

Case material――

UL94 V-0

Filler material――UL94 V-0

CaseCTIV200（Group IIIa）Filler

CTI

V

600（Group Ⅰ）

Comparative Tracking Index；（CTI）

ENVIRONMENTAL AND MECHANICAL CHARACTERISTICS
Parameters

SymbolUnit

Ambient operating temperature

TAAmbient storage temperature
MassValue
MINTYP

MAX℃－ 40―＋ 70

TS℃

－ 40―

＋ 85mg―260―

129Remarks

Open loop

SymbolClosed loop

Parameters

Fluxgate system

ABSOLUTE MAXIMUM RATINGSS28S

CURRENT SENSORSSPECIFICATIONS
SymbolUnit

IPN

Primary nominal current
Primary current, measuring range ＊ 1

Fluxgate system

Introduction

Measuring resistance ＊ 1ValueRemarks

MINTYP

MAXArms－± 500－

Ta = － 40℃～ +70℃

IPM

Apeak± 800－－

at Ta=+70℃, Vcc=25.2V, RM=5ohm,
t=4secRM

Ohm0－－

at Vcc= ± 15 ～ ± 18V.
See Fig1

Conversion ratio

KN－－

1 : 5000－

Output current @IPN

IomA

－

100－Accuracy @IPN

X%

－ 0.5

0.0＋ 0.5

at IPN, Without Iof..

Offset current ＊ 2

Iof

mA

－ 0.4

0.0＋ 0.4

at IP = 0A.

Linearity error（0A ～ IPN）＊ 2εL％

－ 0.1

0.0＋ 0.1

Hysteresis error

IOHmA－ 0.20.0＋ 0.2

Supply voltage

Vcc

V± 14.3± 24.0± 25.2－35－

at Vcc= ± 24V, Ip= 0A.
Icc = 35+ Ip /5000.

－26－

at Vcc= ± 15V, Ip= 0A.
Icc = 26+ Ip /5000.

－－

1

di/dt=100A/µs
at very low current

Consumption current

Icc

Response time @90% of IPN ＊ 3Open loop

4 2309TA=+25℃, RM=1Ω, Vcc=±24V

Parameters

mA

tr

µs

Frequency bandwidth（− 3dB）＊ 4BWkHz－

150－

Temperature coefficient of Iof ＊ 2TcIofmA－ 0.4

0.0＋ 0.4

Secondary coil resistanceRsOhm－－80

Io = IPN /5000. Without Iof.

at Ip = 0A → IPN → 0A

at Ip= 0A
TA = ＋ 70℃＊1 C
 urrent sensor has limited operating time depending on the measured resistance and maximum current.
Internal circuits can become corrupted if you used beyond the limited time.
＊ 2 Offset current is measured after removal of the hysteresis.
＊ 3 Measurement condition : Primary conductor cross sectional area is as same as through hole, and penetration with 1turn in through hole.
＊ 4 High fundamental frequency primary current and/or harmonic current may result in excessive heating in magnetic core (Silicon steel).

STANDARDSEN62477-1:2012, A12:2021
Closed loop

2/4

Application example
S28S500D24Z : Rated voltage 300V, CAT Ⅲ , PD2, Reinforced isolation, non uniform field
S28S500D24ZM : Rated voltage 600V, CAT Ⅲ , PD2, Reinforced isolation, non uniform field
S28S500D24ZJ : Rated voltage 600V, CAT Ⅲ , PD2, Reinforced isolation, non uniform field
UL508 （ UL FILE No. E243511 ）Rated voltage 600V, PD2130

S28S

CURRENT SENSORS

S28S

電流センサ関連 CURRENT SENSORS

S28S

電流センサ関連 CURRENT SENSORS
160
特性曲線 TYPICAL CHARACTERISTIC CURVES

604020140±14.25V＆70℃±22.8V＆70℃±22.8V＆70℃

100
80±17.1V＆70℃±17.1V＆70℃±14.25V＆70℃±14.25V＆70℃

Note. At Ip = 800 A, pulse operation is used.

350020400450500 550 600
Ipm(Aop)

650

700

750800Fig1. Maximum Measuring Resistance（Ta=70℃)

Fig1. Maximum
300 350 Measuring
400 450 Resistance（Ta=70℃500 550 600 650 700) 750 800

350400450500 550 600
Ipm(Aop)

650700Measurement conditions:Fig1. Maximum Measuring Resistance（Ta=70℃)

750

800 Ta=+25℃, RM=100Ω, Ip=3A*20T, Vcc=±24V

Fig1. Maximum Measuring Resistance（Ta=70℃)

Measurement conditions:
Ta=+25℃, RM=100Ω, Ip=3A*20T, Vcc=±24V

Measurement conditions:
Ta=+25℃, RM=100Ω, Ip=3A*20T, Vcc=±24V

Fig2. Frequency response curve

接続図 CONNECTION

Measurement conditions:
Ta=+25℃ , RM=100 Ω , Ip=3A*20T, Vcc= ± 24V

Fluxgate system

Ipm(Aop)

300

Open loop

RM.max(Ω)

120

0±17.1V＆70℃

RM.max(Ω)
RM.max(Ω)

1603/4 4 2309

3/4 4 2309

Minimum
MeasuringResistance(Ta=25℃ )Minimum
MeasuringResistance(Ta=25℃)±15V± 15V 0Ω～0 Ω～0Ω～±18V
± 18V
0 Ω～
5Ω～
±24V
Minimum
MeasuringResistance(Ta=25℃)
Minimum
MeasuringResistance(Ta=25℃)
±24V
5 Ω～
注.
Ip=800Aにおいて、連続通電ではなく、パル±15V±15V 0Ω～0Ω～ス動作とする。
Note.
At 0Ω～
Ip =0Ω～800 A, pulse operation is used.
±18V
±18V
Note.
At Ip = 800
A, pulse operation is used.
5Ω～±24V
5Ω～±24V
注. Ip=800Aにおいて、連続通電ではなく、パル
注. Ip=800Aにおいて、連続通電ではなく、パルス動作とする。
Note.
At Ip = 800 A, pulse operation is used.
ス動作とする。

±22.8V＆70℃

140
特性曲線 TYPICAL CHARACTERISTICCURVES
120160100140801206010040802060040300

3/4 4 2309

S28S

特性曲線
CHARACTERISTICCURVES
電TYPICAL
流センサ
関連 CURRENTSENSORS

4 2309Introduction

TYPICAL CHARACTERISTIC CURVES

3/4

Fig2. Frequency response curve

Fig2. Frequency response curve
接続図 CONNECTION

Fig2. Frequency response curve

Closed loop

CONNECTION
接続図 CONNECTION

Fig3. Block diagram

Fig3. Block diagram

Fig3.
Blockdiagram
Fig3.
Blockdiagram

131

S28S

CURRENT SENSORS

S28S

電流センサ関連 CURRENT SENSORS

4/44 2309

4/4 4 2309

外形図 DIMENSIONS(mm)DIMENSIONS(mm)
1. S28S500D24ZJ

312.50.3

Example of Name Plate

30.3

2.5

Current direction

Product code

Current direction
Connector

4 - Φ 1 .9

11626

23

41.4
7780

Term inal No.
Detail A
Connector

1-Vcc(-24V)

Maker

PartsNo.

Old parts No.

2Iout

JST

BH3P-VH-1-3+Vcc(+24V)

3. S28S500D24Z

4 .3

B

70( 7.4 )4 .3

A

312.50.3

1 .930Current direction

3211626
41.4
77
80

Terminal No

34 - Φ 1 .9

Connector

4 .3
6- Φ 9Φ
6-C urrent direction

Term inal No.

4 .3
6- Φ 9
Φ6-Connector

41.4
7780

Term inal No.
Detail A
Connector

3142

1626

4 - Φ 1 .9

2.5

0.3

57
65
89

R 5 .4

3

2.5

0.3

57
65
89

R 5 .4

Φ

Φ

30.

4- Φ

4- Φ35

2

A

70.4
30.2
10

1 .910
30.2

4- Φ

0.3

704- Φ

31
2.535

B

( 9.5 )

.2

70.4
30.2
1057
32

Closed loop

2. S28S500D24ZM1030.2

Terminal No

57
32

Lot No. ( 6 figure) + Serial No. ( 4 figure)

3557
65
89

R 5 .4

Φ3Fluxgate system( 10.4 )1030.20 .2

A4 .36- Φ 96- ΦOpen loop

B(all): The screw specification：M4
Recommended fastening torque：1.5 N･m(15.3kgf･cm）

70.4 Hall-Element position
30.2
104 .34- Φ1 .94- ΦB

57
32Tolerance : ±0.5
Unit : mm

70Introduction

NameTerminal No

Term inal No.
Detail A
Connector

1+Vcc(+24V)

Maker

PartsNo.

Old parts No.

1NC

Maker

PartsNo.

Old parts No.

2Iout

Molex

38-00-6293

6410-03C(102)2-Vcc(-24V)

Molex

39-28-8040

5566-04A-210

3-Vcc(-24V)

3Iout

4+Vcc(+24V)

132

Notices

CURRENT SENSORS

1/1

3 1510

Important Notice
7. This product is not designed to resist radiation.

1. The content of this information is subject to change without

vehicle equipment, safety devices, and so on) in which・U se in liquids such as water, oil, chemical solutions, ororganic solvents, and use in locations where the product will
be exposed to such liquids.
・U se that involves exposure to direct sunlight, outdoor
exposure, or dusty conditions.
・Use in locations where corrosive gases such as sea winds,Cl2, H2S, NH3, SO2, or NO2, are present. (Some productimproves durability)・U se in environments with strong static electricity orelectromagnetic radiation.
・Use that involves placing inflammable material next to theproduct.
・Use of this product either sealed with a resin filling or coatedwith resin.
・Use of water or a water soluble detergent for flux cleaning.
・Use in locations where condensation is liable to occur.

extremely high quality and high reliability is required, or if

8. D o not use or otherwise make available the TAMUTA

the malfunction or failures of product could be cause loss ofproducts or the technology described in this document for any

human life, bodily injury.

military purposes, including without limitation, for the design,prior notice for the purpose of improvements, etc. Ensure thatyou are in possession of the most up-to-date information whenusing this product.
2. T his product is intended to be used in general electronics
applications (electric home appliances, business equipment,information equipment, communication terminal equipment,
measuring devices, industrial equipment, and so on). This
product is neither intended nor warranted for use in following
equipment or devices:
Special application (such as for medical devices,transportation equipment, traffic signal control equipment,
fire and crime prevention equipment, aeronautics andspace devices, nuclear power control, fuel control, in-Tamura Corporation shall not be held responsible for any

development, use, stockpiling or manufacturing of mass

damage incurred by customers or any third party when products

destruction weapons (e.g. nuclear, chemical, or biologicalare used in special application, unless specifically permitted inweapons or missile technology products). When exporting

this document.

and re-exporting the products or technology described in thisdocument, you should comply with the applicable export control

3. Tamura Corporation constantly strives to improve quality andlaws and regulations and follow the procedures required byreliability, but malfunction or failures are bound to occur withsuch laws and regulations including, without limitation, Japansome probability in current sensor. To ensure that failures do-Foreign Exchange and Foreign Trade Control Law and U.S.-

not cause accidents resulting in injury or death, fire accidents,

Export Administration Regulations. The TAMURA productssocial damage, and so on, users are to thoroughly verify theand related technology should not be used for or incorporated

safety of their designs in devices and/or systems.

into any products or systems whose manufacture, use, or saleis prohibited under any applicable domestic or foreign laws or4. The operation examples and circuit examples shown in thisregulations.

information are for reference purposes only, and Tamura
Corporation disclaims all responsibility for any violations of

9. Please contact your TAMURA sales office for details as toindustrial property rights, intellectual property rights and any

environmental matters such as the RoHS compatibility ofother rights owned by Tamura Corporation or third parties that

Product. Please use TAMURA products in compliance with allthese may entail.

applicable laws and regulations that regulate the inclusion or5. T he circuit examples and part constants listed in theseuse of controlled substances, including without limitation, thespecifications are provided as reference for the verification

EU RoHS Directive. TAMURA assumes no liability for damagesof characteristics. The user is to perform design, verification,or losses occurring as a result of your noncompliance withand judgment under his or her own responsibility, taking into

applicable laws and regulations.

account the various conditions.

10. T
 AMURA assumes no liability for damages or losses incurred by
you or third parties as a result of unauthorized use of TAMURA

6. T he products are designed for use in environments whereproducts.

consumer electronics are commonly used. It is not designed foruse in special environments such as listed below, and if such

11. T his document and any information herein may not be

use is considered, the user is to perform thorough safety andreproduced in whole or in part without prior written permission

reliability checks under his/her responsibility.

from TAMURA.

9

Appli note

CURRENT SENSORS

1/1

3 1709Application notes<General Considerations><Open loop>

1. T he sensor uses polar electronic components. When the1. High frequency primary current may result in excessive heating

polarity of the power supply is mistaken, the sensor is damaged.

in iron magnetic core and cause damage to internal circuitry;

2. Static electricity or excessive voltage can increase an offset

for high frequency applications select current sensor with ferrite

voltage in the Hall element, and cause offset voltage to change.

core material.
2. If the measured current exceeds the rated current, magnetic

Please exercise care in handling and application.

core saturation will occur and the output voltage signal will not

3. In order to prevent the influence of noise, the use of twisted

be linearly proportional to the measured current.

cable or shielded cable for the output line is recommended
4. If using this device within a magnetic field generated by otherdevices, the specified accuracy may not be obtainable.

<Closed Loop>

5. O ur products（several models are excluded ）are adjusted

1. For closed loop current sensors please insure the power supply

with the trimming method by the measurement condition

voltage is balanced, symmetrical, and, applied simultaneously（Load resistance, Power supply voltage）of specification

to avoid potential increase in DC offset error.

sheets. Therefore, characteristics（Offset, Output, etc.）and its

2. Maximum rated current measurement duration is timedependent.

deviation may be changed in different circuit conditions from

Maximum rated current applied in excess of the time limit can

the measurement condition. All change characteristic items are

result in damage to internal electronic circuitry; please consult

not indicated on specification sheets.

Tamura for assistance.

6. The performance of current sensors with through-hole（aperture）

3. When using a measurement resistor to convert current output

is dependent on the position of the primary conductor. Tamura

to voltage output select a resistor with stable temperature

specifications are based on a primary conductor completely

characteristic to insure accuracy of the output voltage.

filling the through-hole（aperture）area.

4. Compensation current supplied to the secondary winding varies

7. T he current sensor rated current in DC Amps.

in proportion to the measured current based on the conversion

8. Please use mating connector with equivalent terminal plating

ratio.（If/KN; KN ＝ secondary turns）Please insure the PSU

material to insure proper operation and avoid possibility ofhas required current capacity to supply compensation current‘galvanic corrosion’.

to the secondary winding.

9. P lease do not store in high-temperature and high-humidity
storage environment. Please use it after confirming soldering<Flux-Gate>

when it is kept for six months or more.（product soldered with

1. Compensation current supplied to the secondary winding variessubstrate）
10. We recommend performing a zero offset adjustment by measuring

in proportion to the measured current. Please insure the PSU

the offset voltage at startup. In continuously operation for a few

has required current capacity to supply compensation current
to the secondary winding.

months, or at change of ambient temperature or humidity is large,

2. T here is 450kHz ripple voltage present on the output and

we recommend regularly performing a zero offset adjustment at

reference output voltage signals . An external capacitor maybe

being idling（it is clear that the current is not apply）.

added if necessary.

11. The current sensor doesn't have built-in protection circuit(devices and fuses, etc.). As a failure mode of the sensor,
there is a short circuit and open state. In the case of a shortcircuit state, the abnor-mal temperature rise of the internal
parts is assumed, and there is a possibility to smoke and toignite. If it is used in safety critical circuit blocks, please takeappropriate measures by protection devices, protection circuits,etc. For closed loop –type sensors and flux gate (closed looptype) sensors, the consumption current of the secondary powersupply varies in proportion to the measurement current.

7